diff --git a/PhysicsAnalysis/NtupleDumper/src/NtupleDumperAlg.cxx b/PhysicsAnalysis/NtupleDumper/src/NtupleDumperAlg.cxx
index 2079edf56b82552c564f1a28d19af9c56e9223e7..0df49fce419154eb46a24f24cc46920349874d41 100644
--- a/PhysicsAnalysis/NtupleDumper/src/NtupleDumperAlg.cxx
+++ b/PhysicsAnalysis/NtupleDumper/src/NtupleDumperAlg.cxx
@@ -375,6 +375,39 @@ StatusCode NtupleDumperAlg::initialize()
   m_tree->Branch("truth_dec_x", &m_truth_dec_x);
   m_tree->Branch("truth_dec_y", &m_truth_dec_y);
   m_tree->Branch("truth_dec_z", &m_truth_dec_z);
+  m_tree->Branch("truth_isFiducial", &m_truth_isFiducial);
+
+  m_tree->Branch("truth_st0_x", &m_truth_st_x[0]);
+  m_tree->Branch("truth_st0_y", &m_truth_st_y[0]);
+  m_tree->Branch("truth_st0_z", &m_truth_st_z[0]);
+
+  m_tree->Branch("truth_st1_x", &m_truth_st_x[1]);
+  m_tree->Branch("truth_st1_y", &m_truth_st_y[1]);
+  m_tree->Branch("truth_st1_z", &m_truth_st_z[1]);
+
+  m_tree->Branch("truth_st2_x", &m_truth_st_x[2]);
+  m_tree->Branch("truth_st2_y", &m_truth_st_y[2]);
+  m_tree->Branch("truth_st2_z", &m_truth_st_z[2]);
+
+  m_tree->Branch("truth_st3_x", &m_truth_st_x[3]);
+  m_tree->Branch("truth_st3_y", &m_truth_st_y[3]);
+  m_tree->Branch("truth_st3_z", &m_truth_st_z[3]);
+
+  m_tree->Branch("truth_st0_px", &m_truth_st_px[0]);
+  m_tree->Branch("truth_st0_py", &m_truth_st_py[0]);
+  m_tree->Branch("truth_st0_pz", &m_truth_st_pz[0]);
+
+  m_tree->Branch("truth_st1_px", &m_truth_st_px[1]);
+  m_tree->Branch("truth_st1_py", &m_truth_st_py[1]);
+  m_tree->Branch("truth_st1_pz", &m_truth_st_pz[1]);
+
+  m_tree->Branch("truth_st2_px", &m_truth_st_px[2]);
+  m_tree->Branch("truth_st2_py", &m_truth_st_py[2]);
+  m_tree->Branch("truth_st2_pz", &m_truth_st_pz[2]);
+
+  m_tree->Branch("truth_st3_px", &m_truth_st_px[3]);
+  m_tree->Branch("truth_st3_py", &m_truth_st_py[3]);
+  m_tree->Branch("truth_st3_pz", &m_truth_st_pz[3]);
 
   // for mother + daughter particle truth infomation 
 
@@ -393,6 +426,7 @@ StatusCode NtupleDumperAlg::initialize()
   m_tree->Branch("truthd0_x", &m_truthd0_x);
   m_tree->Branch("truthd0_y", &m_truthd0_y);
   m_tree->Branch("truthd0_z", &m_truthd0_z);
+  m_tree->Branch("truthd0_isFiducial", &m_truthd0_isFiducial);
 
   m_tree->Branch("truthd1_P", &m_truthd1_P);
   m_tree->Branch("truthd1_px", &m_truthd1_px);
@@ -401,6 +435,7 @@ StatusCode NtupleDumperAlg::initialize()
   m_tree->Branch("truthd1_x", &m_truthd1_x);
   m_tree->Branch("truthd1_y", &m_truthd1_y);
   m_tree->Branch("truthd1_z", &m_truthd1_z);
+  m_tree->Branch("truthd1_isFiducial", &m_truthd1_isFiducial);
 
   m_tree->Branch("vertex_x", &m_vertex_x, "vertex_x/D");
   m_tree->Branch("vertex_y", &m_vertex_y, "vertex_y/D");
@@ -748,7 +783,9 @@ StatusCode NtupleDumperAlg::execute(const EventContext &ctx) const
 
     // Find truth particle information 
     SG::ReadHandle<xAOD::TruthParticleContainer> truthParticleContainer { m_truthParticleContainer, ctx };
+    
     if (truthParticleContainer.isValid() && truthParticleContainer->size() > 0) {
+      
       int ipart(0);
       for (auto particle : *truthParticleContainer) { 	// loop over first 10 truth particles (for non A' samples)
         if (ipart++ > 9) break;
@@ -759,7 +796,7 @@ StatusCode NtupleDumperAlg::execute(const EventContext &ctx) const
         m_truth_pz.push_back(particle->p4().Z());
         m_truth_m.push_back(particle->m());
         m_truth_pdg.push_back(particle->pdgId());
-        m_truthParticleIsFiducial.push_back(m_fiducialParticleTool->isFiducial(particle->barcode()));
+        m_truth_isFiducial.push_back(m_fiducialParticleTool->isFiducial(particle->barcode()));
 
         if ( particle->hasProdVtx()) {
           m_truth_prod_x.push_back(particle->prodVtx()->x());
@@ -780,6 +817,20 @@ StatusCode NtupleDumperAlg::execute(const EventContext &ctx) const
           m_truth_dec_y.push_back(999999);
           m_truth_dec_z.push_back(999999);
         }
+        auto positions = m_fiducialParticleTool->getTruthPositions(particle->barcode());
+        for (int station = 0; station < 4; ++station) {
+          m_truth_st_x[station].push_back(positions[station].x());
+          m_truth_st_y[station].push_back(positions[station].y());
+          m_truth_st_z[station].push_back(positions[station].z());
+        }
+
+        auto momenta = m_fiducialParticleTool->getTruthMomenta(truthParticle->barcode());
+        for (int station = 0; station < 4; ++station) {
+          m_truth_st_px[station].push_back(momenta[station].x());
+          m_truth_st_py[station].push_back(momenta[station].y());
+          m_truth_st_pz[station].push_back(momenta[station].z());
+        }
+
 
         // Find the M d0 and d1 truth information for dark photon
         if ( particle->barcode() == 1 || particle->barcode() == 2 || particle->barcode() == 3 ) {
@@ -789,7 +840,7 @@ StatusCode NtupleDumperAlg::execute(const EventContext &ctx) const
       	    m_truthM_px.push_back(particle->p4().X());
             m_truthM_py.push_back(particle->p4().Y());
             m_truthM_pz.push_back(particle->p4().Z());
-            m_truthParticleIsFiducial.push_back(m_fiducialParticleTool->isFiducial(particle->barcode()));
+            
 
             if ( particle->hasDecayVtx()) { // decay vertex for A' particle 
               m_truthM_x.push_back(particle->decayVtx()->x());
@@ -807,7 +858,7 @@ StatusCode NtupleDumperAlg::execute(const EventContext &ctx) const
             m_truthd0_px.push_back(particle->p4().X());
             m_truthd0_py.push_back(particle->p4().Y());
             m_truthd0_pz.push_back(particle->p4().Z());
-            m_truthParticleIsFiducial.push_back(m_fiducialParticleTool->isFiducial(particle->barcode()));
+            m_truthd0_isFiducial.push_back(m_fiducialParticleTool->isFiducial(particle->barcode()));
 
             if ( particle->hasProdVtx()) {
               m_truthd0_x.push_back(particle->prodVtx()->x());
@@ -829,6 +880,9 @@ StatusCode NtupleDumperAlg::execute(const EventContext &ctx) const
             m_truthd1_px.push_back(particle->p4().X());
             m_truthd1_py.push_back(particle->p4().Y());
             m_truthd1_pz.push_back(particle->p4().Z());
+            m_truthd1_isFiducial.push_back(m_fiducialParticleTool->isFiducial(particle->barcode()));
+            //m_isFiducial.push_back(m_fiducialParticleTool->isFiducial(truthParticle->barcode()));
+            
 
             if ( particle->hasProdVtx()) {
               m_truthd1_x.push_back(particle->prodVtx()->x());
@@ -1313,7 +1367,7 @@ StatusCode NtupleDumperAlg::execute(const EventContext &ctx) const
     for (auto &tp : truthParticleCount) {
       m_truthParticleBarcode.push_back(tp.first);
       m_truthParticleMatchedTracks.push_back(tp.second);
-      //m_truthParticleIsFiducial.push_back(m_fiducialParticleTool->isFiducial(tp.first));
+      m_truthParticleIsFiducial.push_back(m_fiducialParticleTool->isFiducial(tp.first));
     }
   }
 
@@ -1598,6 +1652,20 @@ NtupleDumperAlg::clearTree() const
   m_truth_dec_x.clear();
   m_truth_dec_y.clear();
   m_truth_dec_z.clear();
+  m_truth_isFiducial.clear();
+
+
+  for (int station = 0; station < 4; ++station) {
+      m_truth_st_x[station].clear();
+      m_truth_st_y[station].clear();
+      m_truth_st_z[station].clear();
+    }
+  for (int station = 0; station < 4; ++station) {
+      m_truth_st_px[station].clear();
+      m_truth_st_py[station].clear();
+      m_truth_st_pz[station].clear();
+    }
+
 
   m_truthM_P.clear();
   m_truthM_px.clear();
@@ -1614,6 +1682,7 @@ NtupleDumperAlg::clearTree() const
   m_truthd0_x.clear();
   m_truthd0_y.clear();
   m_truthd0_z.clear();
+  m_truthd0_isFiducial.clear();
 
   m_truthd1_P.clear();
   m_truthd1_px.clear();
@@ -1622,6 +1691,7 @@ NtupleDumperAlg::clearTree() const
   m_truthd1_x.clear();
   m_truthd1_y.clear();
   m_truthd1_z.clear();
+  m_truthd1_isFiducial.clear();
 
   m_vertex_x = NaN;
   m_vertex_y = NaN;
diff --git a/PhysicsAnalysis/NtupleDumper/src/NtupleDumperAlg.h b/PhysicsAnalysis/NtupleDumper/src/NtupleDumperAlg.h
index d4fc22b9754617ea8c68aba3c365ef334abd0d5d..762879a5f65b1541bd989405af8b647c4e20192c 100644
--- a/PhysicsAnalysis/NtupleDumper/src/NtupleDumperAlg.h
+++ b/PhysicsAnalysis/NtupleDumper/src/NtupleDumperAlg.h
@@ -340,16 +340,19 @@ private:
   mutable std::vector<double> m_truthM_z;
 
   mutable std::vector<double> m_truthd0_P;
+  mutable std::vector<bool> m_truthd0_isFiducial; // isFiducial applied to daughter of A' [Electron]
 
   mutable std::vector<double> m_truthd0_px;
   mutable std::vector<double> m_truthd0_py;
   mutable std::vector<double> m_truthd0_pz;
 
+
   mutable std::vector<double> m_truthd0_x; // production vertex for daughter particles 
   mutable std::vector<double> m_truthd0_y;
   mutable std::vector<double> m_truthd0_z;
 
   mutable std::vector<double> m_truthd1_P;
+  mutable std::vector<bool> m_truthd1_isFiducial; // isFiducial applied to daughter of A' [Positron]
 
   mutable std::vector<double> m_truthd1_px;
   mutable std::vector<double> m_truthd1_py;
@@ -359,6 +362,8 @@ private:
   mutable std::vector<double> m_truthd1_y;
   mutable std::vector<double> m_truthd1_z;
 
+  
+
   // first 10 truth particles 
 
   mutable std::vector<double> m_truth_P;
@@ -375,7 +380,15 @@ private:
   mutable std::vector<double> m_truth_prod_y;
   mutable std::vector<double> m_truth_prod_z;
 
+  mutable std::array<std::vector<double>, 4> m_truth_st_x; // vector of the x components of the simulated hits of the truth particle for each station [first 10 MC particles]
+  mutable std::array<std::vector<double>, 4> m_truth_st_y; // vector of the y components of the simulated hits of the truth particle for each station [first 10 MC particles]
+  mutable std::array<std::vector<double>, 4> m_truth_st_z; // vector of the z components of the simulated hits of the truth particle for each station [first 10 MC particles]
+  mutable std::array<std::vector<double>, 4> m_truth_st_px; // x components of the true momentum at each station [first 10 MC particles]
+  mutable std::array<std::vector<double>, 4> m_truth_st_py; // y components of the true momentum at each station [first 10 MC particles]
+  mutable std::array<std::vector<double>, 4> m_truth_st_pz; // z components of the true momentum at each station [first 10 MC particles]
+
   mutable std::vector<int> m_truth_pdg; // pdg of first 10 truth particles 
+  mutable std::vector<bool> m_truth_isFiducial; /// Vector of boolean showing whether a truth particle is fiducial for the first 10 particles
 
   mutable double m_truthLeptonMomentum; 
   mutable int    m_truthBarcode;